 What's That Pretty Stuff All Over The Trees? | Photo |
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| What's That Pretty Stuff All Over The Trees?Photographer: Sherry BergerFrom: 3,540 Trees TB Code: [photo=2355026] What's That Pretty Stuff All Over The Trees?It's LICHEN. A lichen is a symbiosis. That means that it is two or more organisms living together for a successful partnership (fungus and algae). Lichen is a good pollution indicator, and probably why I've never seen it before living in Philly. |
